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    SubjectRe: 2.4.20: Proccess stuck in __lock_page ...


    On Tue, 27 May 2003, Carl-Daniel Hailfinger wrote:

    > Christian,
    >
    > this looks supiciously like the problem you are experiencing since
    > 2.4.19-pre. Maybe we can fix this for good.
    >
    > Marcelo Tosatti wrote:
    > >
    > > On Mon, 26 May 2003, manish wrote:
    > >
    > >
    > >>Hello !
    > >>
    > >>I am running the 2.4.20 kernel on a system with 3.5 GB RAM and dual CPU.
    > >>I am running bonnie accross four drives in parallel:
    > >>
    > >>bonnie -s 1000 -d /<dir-name>
    > >>
    > >>bdflush settings on this system:
    > >>
    > >>[root@dyn-10-123-130-235 vm]# cat bdflush
    > >>2 50 32 100 50 300 1 0 0
    > >>
    > >>All the bonnie process and any other process (like df, ps -ef etc.) are
    > >>hung in __lock_page. Breaking into kdb, I observe the following for one
    >
    > Following is SysRq-T output for stuck processes during such a pause from
    > Christian Klose. Only processes in D state are listed for brevity.
    > Especially the last two call traces are interesting.

    A "pause" is perfectly fine (to some extent, of course), now a hang is
    not. Is this backtrace from a hanged, unusable kernel or ?
    -
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